Abstract

Haskell is the world's leading purely functional programming language
that offers a radical and elegant attack on the whole business of
writing programs. In the last two or three years there has been an
explosion of interest in Haskell, and it is now being used for a
bewildering variety of applications.

In this tutorial, I will try to show you why programming in Haskell is
such fun, and how it makes you think about programming in a new way.

I'm going to use xmonad as my running example;
it's an X11 window manager written entirely in 500 lines of
Haskell. Based on xmonad I will show you how to

write functional programs

test them using QuickCheck

write imperative programs

call foreign functions

use Haskell for scripting applications

I won't assume you know any functional programming at all, but I will
assume that you are an experienced professional programmer, so I will
move along quite briskly.